Sunday, May 12, 2019

The First Ecologist Predicted Climate Change

In 1799, thirty-year old Prussian explorer / naturalist and polymath Alexander von Humboldt travelled to South America where he formulated accurate concepts of ecology and climate interaction through comparative and holistic observation.

Humboldt was the first ecologist.

Humboldt had practiced the science of ecology for fifty years by the time German scientist Ernst Haeckel created a name for it (√∂kologie) in 1869. Humboldt made his scientific observations with the eyes that polymath and poet Goethe had given him. He embraced Schelling’s naturphilosophie, which espoused an organic and dynamic worldview as an alternative to the atomist and mechanist outlook that prevailed at the time. During that time, Enlightenment thinkers and scientists based their observations on the idea of an unchanging Nature that functioned like a machine; Humboldt argued that Nature’s one constant was change.

Heart of the Andes (by Frederic Edwin Church)

 During his journey through South America, Humboldt focused less on discovery and more on connection. Connection, relationship and consequence; these are the tenets of ecology. With the eyes of an ecologist, Humboldt formulated a new vision of nature that he depicted in his Naturgem√§lde—a “painting of nature” that implied a sense of unity or wholeness.

Humboldt’s 1807 Essay on the Geography of Plants, which he dedicated to his friend Goethe, promoted an entirely different perspective of nature; something none of his contemporaries saw, imagined or grasped. Humboldt wrote, “Nature is a living whole,” that interacts like a single organism with certain keystone species that are essential for that interconnected web to flourish. This maverick notion would later re-emerge over a century later as the Gaia Hypothesis of Lynn Margulis and James Lovelock.

Diverging from the current focus on static classification and taxonomy, Humboldt grouped plants into zones and regions, based on climate and geography. He had invented what would a century later be known as a biogeoclimatic zone—a region with a relatively uniform macroclimate and characterized by specific ecological properties such as energy flow, vegetation communities, and soils.

Humboldt saw nature as a living organism, animated by dynamic forces.

True to his holistic vision, Humboldt invented global temperature isopleths—still used today. It is no surprise that the world’s first ecologist would also predict humanity’s devastating effect on global climate. Only a scientist who integrated the greater relationships of natural forces could predict the impacts of a growing humanity on them. Humboldt did this by observing ecosystem loss and impacts on micro-climate and extrapolating to global proportions.

Humboldt was more than the world’s first ecologist; he was also the world’s first planetologist.

Deforestation & Climate Change

With an ecologist’s perspective, Humboldt astutely observed connections between human’s interference—particularly deforestation, over-cultivation, and industrialization—on ecological integrity.

Sugar plantation in South America


During his excursion in the late 1700s from Caracas to the Aragua Valley, Humboldt observed dry soils and lower crop yields resulting from deforestation and monoculture. Where the trees had been felled, heavy rains had washed away the soil. This was “all connected,” Humboldt concluded. With the forests no longer there to shade and anchor the soil or keep in the moisture, inevitable flash floods and washouts occurred.

In 1807, after witnessing the devastation in the valley of Aragua at Lake Valencia in South America, 38-year old Humboldt formulated his notion of human-induced climate change:

When forests are destroyed, as they are everywhere in America by the European planters, with an imprudent precipitation, the springs are entirely dried up, or become less abundant. The beds of the rivers, remaining dry during a part of the year, are converted into torrents, whenever great rains fall on the heights. [As] the sward and moss disappear with the brush-wood from the sides of the mountain, the waters falling in rain are no longer impeded in their course: and instead of slowly augmenting the level of the rivers by progressive filtrations, they furrow during heavy showers the sides of the hills, bear down the loosened soil, and from those sudden inundations, that devastate the country.

His excursions through Siberia twenty years later cemented his observations. In 1831 Humboldt listed the three ways in which human activities were already affecting climate: 1) deforestation; 2) ruthless irrigation; and 3) the “great masses of steam and gas” produced in the industrial centres. No one but Humboldt had looked at the relationship between humankind and nature like this before, observes his biographer Andrea Wulf in her book The Invention of Nature. This was because, throughout his scientific career, Humboldt searched for the “connections which linked all phenomena and all the forces of nature.”

The great irony is that for over two centuries after Humboldt’s observations in 1807, we are still learning this ecological lesson. Water and soil engineers, hydrologists, farmers, loggers, and politicians still need to acknowledge the consequences of these three activities on ecosystems and on macro- and global climate.

Humboldt astutely placed the burden of responsibility on the exploitive avarice of colonialists. He questioned their choices in exploiting the environment and their lack of sustainable practices. In Aragua, Humboldt witnessed how maize and other edible crops had been replaced with indigo, which “impoverishes the soil”—exploiting the soil like a mine and permanently robbing it of its goodness. In Mexico he saw the effects of deforestation in mine smelting. In Cuba, Humboldt witnessed the stripping of forests for sugar plantations—cash crops replacing “those vegetables which supply nourishment”—and criticized the unsustainable use of monocultures and high-yield or forced-yield cash crops.

With sharp prescience, Humboldt predicted today’s pesticide-doused monocrops of giant biotech corporations like Monsanto, Syngenta, Bayer, and Dupont, who have created a mafia-style monopoly on food production in the world.

Humboldt noted the devastating effects of deforestation, intense husbandry, and mining in the northern regions of Russia. He astutely predicted today’s devastating floods through the ignorant draining of swamps and lakes for fields and pastures. He witnessed and correctly predicted the consequences that we currently see in many parts of the world resulting from water removal and diversion, draining of wetlands, and removal of vegetation. An example here in Canada is Manitoba’s Red River, which constantly poses hardships through flooding farmland and urban Winnipeg as a result of wetland removal and diversion.

Why have we forgotten the lessons of Humboldt? Is it political will? Corporate short-term greed? The neoliberal model of Capitalism? Or is it simply that we have forgotten Nature: her importance and role in our own survival?



Ecology is the study of relationships and change. As a scientific discipline, ecology looks at how components of an environment (animate and inanimate) relate through a wide range of consequence, from species adaptations and ecological succession to climate change and evolution.

Unsustainable exploitation is the act of using something so thoroughly that it can no longer be used again. This is akin to a parasite or parasitoid that eventually kills its host. Examples that come to mind are monocrops and single-use plastics. There are many others.


References:

Lovelock JE. 1972. “Gaia as seen through the atmosphere”. Atmos Environ 6(8):579–580. doi:10.1016/0004-6981(72)90076-5

Von Humboldt, Alexander and Aime Bonpland. 1807 (2013). “Essay on the Geography of Plants.” University of Chicago Press. Chicago. 296pp.

Wulf, Andrea. 2015. “The Invention of Nature: Alexander von Humboldt’s New World.” Vintage Books, New York. 552pp.


Tuesday, April 9, 2019

The White Willow--A Study

It was that time of stillness in early spring when the snow has fled but the intractable greys and browns of winter persist. I set out into the veil of hibernation, in search of a restive spring.  I walked along Wilket Creek park in Toronto and amid the winter duff a great gnarly white willow tree beckoned

... So, I got closer and closer and closer...

What I saw excited and intrigued. I saw moss, lichen, and fungi nestled in deep crevasses of rope-like bark. The ridges were so deep that when I captured one with my camera, the next one looked like another tree in the background. Seen up close, the bark texture resembled bone and stone. In one huge crevice a spider had made its web and had ensnared some unfortunate insect for its dinner. In another cavern-like fissure, I saw the brilliant yellow-green of a new lichen. Here, amid the “dead” bark, an entire community was stirring with the freshness of spring. The different bark textures of trees attract different species that live on it. The deep fissures and crevices on the bark of white willow provide a wonderful haven for various epiphytes such as moss and lichen, and many species of insects and spiders. The invertebrates, in turn, attract birds that feed on them.

Willow Bark

The bark of a willow plays a similar role as our skin for us. It protects the tree, particularly its soft living and growing layer. Tree bark is also home to many species, providing an important micro-ecosystem in the forest.

Willow bark protects the living and growing layer called cambium. Every growing season, the living cambium adds a new layer of cells to the xylem, which it surrounds. The outer edge of the cambium produces another layer of cells that make phloem, which transports sugars from the leaves to the rest of the tree. Outside that, most trees have a layer known as the cork cambium, which produces the cork – the tough outer layer of the tree. This outer layer is all that we usually see of the bark.

Willow as Warrior

The bark of many trees make chemicals that protect against fungal and insect attack. Birch (Betula) bark is high in volatile oils—which make it great for lighting fires—and is so waterproof and resistant to decay that tubes of birch bark can still be found on the forest floor after the wood inside has decayed. Bark of most oak trees (Querqus) is high in tannins, which are toxic and protect the tree from insects.

The willow has salicylic acid in its bark, branches and leaves that helps mediate the tree’s resistance against various pathogens. It does this by inducing the production of pathogenesis-related proteins through a rapid signaling process. The acid helps mediate systematic acquired resistance in which a pathogenic attack on one part of the plant induces resistance in other parts. The signal moves to nearby plants when the salicylic acid converts to the volatile ester methyl salicylate. Willow communicates...

Willow as Provider

Willows enact an important ecological function by colonizing areas that have been disturbed and undergoing successional recovery. Because they grow quickly and easily propagate using stem cuttings, willows can also be used to vegetate stream banks to help prevent erosion and sometimes to re-vegetate other types of disturbed lands. Willows are also common food—especially in winter—for mammals such as deer, moose, and rabbits, among others. Willows are also an important source of nectar for bees in early spring when few other species of pollinators are flowering.

Willows are also a good source of renewable energy, which may prove important in the future. The willow biomass can be burned directly, or it can be chemically converted into more easily portable liquid fuels such as alcohol or a synthetic, petroleum-like mixture. Willow twigs are flexible and have been used to weave baskets, for caning, and to make woven fences and other lattices.
Willow as Healer
Willows have a long history of medicinal use. Many cultures are known to have chewed willow twigs to relieve pain and fever. The original source from which salicylic acid was extracted was the bark of the white willow (S. alba), a native of Europe. This chemical is used to manufacture acetylsalicylic acid (ASA), an analgesic useful for treating pain, fever, and inflammation.
Willow as Magic
The magic and legends associated with the willow tree are often bound up with water—its preferred habitat—and the moon. Hecate, the Greek goddess was the moon and of willow, taught sorcery and witchcraft. The priestesses of Helice, also associated with water, used willow in their magic and witchcraft. The Greek poet Orpheus carried willow branches on his adventures in the Underworld. With its ability to regrow from pollarded trees and cuttings, the willow symbolizes renewal, growth, vitality and immortality to the Chinese.
References:

Brown, R.W., Lawrence, M.J. & Pope, J. 2004. “Animals – Tracks, Trails and Signs.” Hamlyn, London.

Freedman, Bill. “Willow Family (Salicaceae)—Economic and Ecological Importance of Willows. Online: https://science.jrank.org/pages/7398/Willow-Family-Salicaceae-Economic-ecological-importance-willows.html

Judd, Walter S., Christopher Campbell, Elizabeth A. Kellogg, Michael J. Donoghue, and Peter Stevens. 2002. “Plant Systematics: A Phylogenetic Approach.” 2nd ed. with CD-ROM. Suderland, MD: Sinauer.

Klein, R.M.1987. “The Green World. An Introduction to Plants and People.” Harper and Row, New York.

Mitchell, A. 1982. “Trees of Britain and Northern Europe.” Collins, London.
Puplett, Dan. “Tree Bark.” Trees for Life. Online: https://treesforlife.org.uk/forest/forest-ecology/tree-bark/

Steven, H.M. & Carlisle, A. 1959. The Native Pinewoods of Scotland. Oliver & Boyd: Edinburgh.


Street, L. & S. 2002. “The importance of Aspens for lichen.” In: Cosgrove, P & Amphlett, A. (eds.). The Biodiversity and Management of Aspen Woodlands: Proceedings of a one-day conference held in Kingussie, Scotland, on 25th May 2001. The Cairngorms Local Biodiversity Action Plan: Grantown-on Spey.

Nina-tree
Nina Munteanu

Nina Munteanu is an ecologist and internationally published author of award-nominated speculative novels, short stories and non-fiction. She is co-editor of Europa SF and currently teaches writing courses at George Brown College and the University of Toronto. Visit www.ninamunteanu.ca for the latest on her books. Nina’s recent book is the bilingual “La natura dell’acqua / The Way of Water” (Mincione Edizioni, Rome). Her latest “Water Is…” is currently an Amazon Bestseller and NY Times ‘year in reading’ choice of Margaret Atwood.